"An advanced technological civilization is a good approximation to God."

Harvard prof: Deep space signal may be from alien civilization

Alien. Cargo. Moving. Energy. Beams.

Harvard University's astronomy department chair has a theory about fast radio bursts coming from a distant galaxy: an alien civilization.

We should be on the lookout for signs of alien life — and alien death.

Harvard professor Avi Loeb thinks finding signs of dead aliens could help humanity know what not to do if it wants to survive indefinitely.

"If we were now to find other beings beyond planet Earth, this would be the biggest step ever."

In a new interview, a Harvard astronomer opens up about the hunt for alien life — and what first alien contact would mean for human civilization.